Flash Flooding and Damaging Winds in Oklahoma, June 11 to 12, 2026

Name: Flash Flooding and Damaging Winds in Oklahoma, June 11 to 12, 2026
Start: 2026-06-11T18:20
End: 2026-06-12T04:30
Location: Oklahoma

June 11 to 12, 2026 · NWS TSA · 6 events in 2 counties and zones

Where it happened

Every event with a place to put it. Tap one for its entry below.

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Wind
Hail
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Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
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The toll

Deaths: 0
Injuries: 0
Property damage: $2,000
Crop damage: None recorded
Events: 6

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS TSA wrote it up.

Strong to severe thunderstorms developed along a cold front that moved into northeastern Oklahoma during the evening of the 11th. The atmosphere became very unstable during the late afternoon and evening ahead of these thunderstorms, and wind shear increased as an upper level disturbance approached the region. As a result, the strongest thunderstorms produced severe weather in the form of damaging wind. Locally heavy rainfall also resulted in isolated flash flooding.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before the first event at Jun 11, 5:36 PM CST, 44 minutes earlier. Its key messages:

Updated at 1211 PM CDT Thu Jun 11 2026
Thunderstorms are expected across the region today and tonight. Heavy rain... strong downburst winds and hail will accompany the strongest storms.
Shower and thunderstorm chances will continue the next several days. While any thunderstorm will produce heavy rains, Saturday night is expected to have the greatest potential for excessive rainfall over a larger area. Flash flooding potential will exist with the storms. After the several rounds of rain and storms, the flood threat near creeks and streams will increase Saturday into Sunday.
Rain and thunderstorm coverage will decrease on Sunday, but the chance of rainfall will continue, especially in southeast Oklahoma.

Area forecast discussion, Jun 11, 5:36 PM CST, 44 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
636 PM CDT Thu Jun 11 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 1211 PM CDT Thu Jun 11 2026

 - Thunderstorms are expected across the region today and tonight.
   Heavy rain... strong downburst winds and hail will accompany the
   strongest storms.

 - Shower and thunderstorm chances will continue the next several days.
   While any thunderstorm will produce heavy rains, Saturday night is
   expected to have the greatest potential for excessive rainfall over a
   larger area. Flash flooding potential will exist with the storms.
   After the several rounds of rain and storms, the flood threat near
   creeks and streams will increase Saturday into Sunday.

-  Rain and thunderstorm coverage will decrease on Sunday, but the chance
   of rainfall will continue, especially in southeast Oklahoma.

&&

.SHORT TERM...
(Through tonight )
Issued at 1211 PM CDT Thu Jun 11 2026

Thunderstorms will develop in northeast Oklahoma later this afternoon as
a front moves southeast into the area. Deep-layer shear is expected to
increase with time into the evening and support some potential for severe
storms. Initial storm will have wind and hail potential. After a few hours
the activity will tend to grow upscale into a line and continue southeast
with occasional downbursts becoming the primary threat. The severe potential
should diminish after late evening, but thunderstorms should continue across
southeast Oklahoma and west-central Arkansas. Quick heavy rains could lead
to a local flash flood risk.

FYI... Tulsa touched the record high low temp this morning.  Fort Smith and
Fayetteville stayed above their records. But the final low for the day is
expected to be recorded this evening at Tulsa and Fayetteville with the rain
and storms. Timing for Fort Smith may be close.

&&

.LONG TERM...
(Tomorrow through Thursday)
Issued at 1211 PM CDT Thu Jun 11 2026

Shower and storm activity should be ongoing in southeast Oklahoma on Friday
morning, but then diminish with time. The next shot at storms develops
Friday night across far northeast Oklahoma and northwest Arkansas as one or
more nocturnal storm complexes move through region. The front that crosses
our area tonight and Friday will redevelop north on Saturday and be the focus
for widespread thunderstorm development late Saturday and Saturday evening
in southern Kansas or northern Oklahoma. These storms will pose an
excessive rain threat and some severe storm potential. Measurable rain will
fall across most / all of our area from Saturday night into Sunday, with local
amounts of 3 to 5 inches.  A cluster analysis of model data suggests the max
amounts may center around southeast Kansas, southwest Missouri, and northeast
Oklahoma. An isolated amount near 7 inches is not out of the question given
the current data.

Temps will be down Friday, but rebound Saturday in most areas on Saturday.
While conditions may stay below advisory levels, it will be hot and muggy
for some.

The chance of rain may not completely end in our area until Monday.

&&

.AVIATION...
(00Z TAFS)
Issued at 636 PM CDT Thu Jun 11 2026

Convection will continue to spread east and southeast tonight as a
frontal boundary sags southeast through the CWA. Within the
convection, gusty winds, heavy rain and brief MVFR conditions
could develop. Will continue with tempo groups for timing of
greater potential for each TAF site. Behind the convection, a
period of lingering showers are forecast while ceilings become
scattered/broken mid and high clouds into Friday morning. There
is potential in southeast Oklahoma of MVFR ceilings and additional
showers holding into Friday morning as the boundary slows it
momentum before retreating northward during the day. As the
boundary lifts back over the CWA, again scattered mid and high
clouds are forecast Friday afternoon. Winds through the period
start out southerly, transition to northerly and then easterly
tonight behind the boundary, and finally east to southeast once
the front lifts back through Friday.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   68  85  74  91 /  60  10  10  40
FSM   74  88  75  92 /  90  40  10  30
MLC   73  88  76  91 /  90  50  10  10
BVO   63  84  71  91 /  10  10  30  50
FYV   68  86  72  88 /  90  20  30  50
BYV   66  83  69  86 / 100  10  40  60
MKO   69  85  73  89 /  80  30  10  30
MIO   63  84  70  89 /  40   0  40  70
F10   68  85  73  90 /  80  40  10  20
HHW   75  87  75  91 /  70  70   0   0

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...None.
AR...None.
&&

SHORT TERM...08
LONG TERM....08
AVIATION...20

Hazardous weather outlook, Jun 11, 3:54 PM CST, 2 hours 26 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
454 PM CDT Thu Jun 11 2026

ARZ001-002-010-011-119-120-129-219-220-229-OKZ049-053-055>071-
073>075-154-172-176-254-272-276-354-376-122200-
Benton-Carroll-Washington AR-Madison-Northern Crawford-
Northern Franklin-North and Central Sebastian-Southern Crawford-
Central and Southern Franklin-Southern Sebastian-Pushmataha-
Choctaw-Washington OK-Nowata-Craig-Ottawa-Pawnee-Tulsa-Rogers-
Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-Cherokee-Adair-
Muskogee-McIntosh-Pittsburg-Haskell-Latimer-Western Osage-
Northern Sequoyah-Northern Le Flore-Northeast Osage-
Central and Southern Sequoyah-Central Le Flore-Southeast Osage-
Southern Le Flore-
454 PM CDT Thu Jun 11 2026

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This Evening and Tonight.

SEVERE THUNDERSTORM.
	RISK...Significant.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...Ongoing.

	AREA AT GREATEST RISK...Northeast Oklahoma and Northwest Arkansas.

HEAVY RAIN AND FLASH FLOOD.
	RISK...Limited.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...Ongoing.

DANGEROUS HEAT.
	RISK...Elevated.
	AREA...Eastern Oklahoma and West Central Arkansas.
	ONSET...Ongoing Through Early Evening.

DISCUSSION...
Thunderstorms will continue to develop along a southeastward
moving frontal boundary over northeast Oklahoma and northwest
Arkansas this evening, and then into southeast Oklahoma tonight.
Increasing severe potentials into this evening will support the
threat for large hail and damaging winds. Overnight, storms are
expected to be more linear with the threat transitioning to mainly
locally damaging wind gusts. Overall severe potentials, weaken
overnight, though thunderstorm chances continue across southeast
Oklahoma and west central Arkansas into early Friday morning. In
addition to the severe threat, quick heavy rains could lead to a
local flash flood risk into tonight.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Expected.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
FRIDAY...Thunderstorm Potential.
SATURDAY...Severe Thunderstorm Potential...High Wind Potential...Heavy
		   Rain Potential.
SUNDAY...Thunderstorm Potential...Heavy Rain Potential.
MONDAY AND TUESDAY...Thunderstorm Potential.
WEDNESDAY...High Wind Potential.

EXTENDED DISCUSSION...
Shower and storm activity should be ongoing in southeast Oklahoma
Friday morning, and then diminish during the day. Additional storms
are forecast Friday night into Saturday morning across far
northeast Oklahoma and northwest Arkansas as one or more nocturnal
storm complexes move through the region. The front that crosses
our area tonight and Friday will redevelop north Saturday and be
the focus for widespread thunderstorm development late Saturday
afternoon and evening in southern Kansas to northern Oklahoma.
These storms will pose an excessive rain threat and some severe
storm potential. Measurable rain will fall across most if not all
of eastern Oklahoma and northwest Arkansas Saturday night into
Sunday while a cold front moves into the region. Local rainfall
amounts of 3 to 5 inches, though an isolated amount near 7 inches
is not out of the question given the current data.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
Emergency managers should continue to closely follow the forecast
into the weekend. Severe weather operations will be necessary at
times. The main concern appears to be the potential for excessive
rain. Flash flooding concerns will increase over the next several
days. The excessive rains, depending on exactly where they fall,
could easily aggravate creek and river flooding.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Jun 11, 3:56 PM CST, 2 hours 24 minutes before

Special Weather Statement
National Weather Service Tulsa OK
456 PM CDT Thu Jun 11 2026

OKZ059-112230-
Pawnee OK-
456 PM CDT Thu Jun 11 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN PAWNEE COUNTY
THROUGH 530 PM CDT...

At 456 PM CDT, Doppler radar indicated a strong thunderstorm 4 miles
northeast of Morrison, moving east at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects. Minor hail damage to vegetation
         is possible.

Locations in or near the path include...
Pawnee...                         Maramec...
Skedee...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Oklahoma.

&&

LAT...LON 3636 9702 3644 9671 3621 9667 3621 9682
      3625 9682 3625 9692 3633 9693 3633 9703
TIME...MOT...LOC 2156Z 261DEG 28KT 3633 9694

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH

Special weather statement, Jun 11, 4:52 PM CST, 1 hour 28 minutes before

Special Weather Statement
National Weather Service Tulsa OK
552 PM CDT Thu Jun 11 2026

OKZ056>058-112315-
Craig OK-Ottawa OK-Nowata OK-
552 PM CDT Thu Jun 11 2026

...STRONG THUNDERSTORMS WILL IMPACT NORTHERN CRAIG...NORTHWESTERN
OTTAWA AND NORTHEASTERN NOWATA COUNTIES THROUGH 615 PM CDT...

At 551 PM CDT, Doppler radar indicated strong thunderstorms along a
line extending from 5 miles east of Oswego to 6 miles east of South
Coffeyville. Movement was southeast at 15 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects.

Locations in or near the path include...
Baxter Springs...                 Treece...
Picher...                         Cardin...
Hollow...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Oklahoma.

&&

LAT...LON 3684 9541 3698 9558 3700 9551 3700 9466
TIME...MOT...LOC 2251Z 313DEG 12KT 3716 9501 3700 9551

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Special weather statement, Jun 11, 5:36 PM CST, 44 minutes before

Special Weather Statement
National Weather Service Tulsa OK
636 PM CDT Thu Jun 11 2026

OKZ055-056-120000-
Nowata OK-Washington OK-
636 PM CDT Thu Jun 11 2026

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL WASHINGTON AND
SOUTHWESTERN NOWATA COUNTIES THROUGH 700 PM CDT...

At 635 PM CDT, Doppler radar indicated a cluster of strong
thunderstorms 3 miles south of Bartlesville, moving southeast at 15
mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects. Minor hail damage to vegetation
         is possible.

Locations in or near the path include...
Bartlesville...                   Ochelata...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Oklahoma.

&&

LAT...LON 3675 9572 3660 9579 3660 9581 3655 9581
      3653 9582 3659 9600 3669 9600 3678 9594
TIME...MOT...LOC 2335Z 296DEG 13KT 3670 9594

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Special weather statement, Jun 11, 5:59 PM CST, 21 minutes before

Special Weather Statement
National Weather Service Tulsa OK
659 PM CDT Thu Jun 11 2026

OKZ057-058-120030-
Craig OK-Ottawa OK-
659 PM CDT Thu Jun 11 2026

...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN CRAIG AND OTTAWA
COUNTIES THROUGH 730 PM CDT...

At 659 PM CDT, Doppler radar indicated strong thunderstorms along a
line extending from near Picher to near Welch. Movement was east at
35 mph.

HAZARD...Wind gusts of 50 to 55 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects. Minor hail damage to vegetation
         is possible.

Locations in or near the path include...
Miami...                          Baxter Springs...
Commerce...                       Fairland...
Quapaw...                         Welch...
Wyandotte...                      Treece...
Narcissa...                       Ottawa...
Peoria...                         Picher...
Cardin...                         Twin Bridges State Park...

This includes Interstate 44 between mile markers 301 and 324.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Oklahoma.

&&

LAT...LON 3690 9462 3670 9479 3695 9526 3700 9513
      3700 9462
TIME...MOT...LOC 2359Z 288DEG 29KT 3700 9481 3687 9506

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH

Special weather statement, Jun 11, 6:06 PM CST, 14 minutes before

Special Weather Statement
National Weather Service Tulsa OK
706 PM CDT Thu Jun 11 2026

OKZ055-056-061-120030-
Rogers OK-Nowata OK-Washington OK-
706 PM CDT Thu Jun 11 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN ROGERS...SOUTHERN
WASHINGTON AND SOUTHWESTERN NOWATA COUNTIES THROUGH 730 PM CDT...

At 706 PM CDT, Doppler radar indicated a strong thunderstorm 6 miles
west of Watova, moving east at 20 mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects. Minor hail damage to vegetation
         is possible.

Locations in or near the path include...
Nowata...                         Talala...
Watova...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Oklahoma.

&&

LAT...LON 3656 9588 3672 9583 3672 9557 3645 9562
TIME...MOT...LOC 0006Z 283DEG 15KT 3663 9577

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

The radar

The Tulsa radar (KINX), 98 km away, was scanning. The volume nearest the first event began at 00:21 UTC.

Open the radar archive at this moment

Event by event

4 thunderstorm wind, 2 flash flood. Local standard time, as filed.

Thunderstorm Wind, Ottawa

When: June 11, 6:20 PM CST
Where: Ottawa County, 1 mi SW of Miami
Measured: 60 kt (69 mph) measured gust
Reported by: Broadcast Media
Coordinates: 36.868, -94.890

Thunderstorm wind gusts were measured to 69 mph.

Thunderstorm Wind, Ottawa

When: June 11, 6:25 PM CST
Where: Ottawa County, 3 mi N of Fairland
Measured: 61 kt (70 mph) estimated gust
Reported by: Public
Coordinates: 36.793, -94.850

Thunderstorm wind gusts were estimated to 70 mph.

Thunderstorm Wind, Ottawa

When: June 11, 6:30 PM CST
Where: Ottawa County, Miami
Measured: 61 kt (70 mph) estimated gust
Property damage: $2,000
Reported by: Emergency Manager
Coordinates: 36.880, -94.880

Strong thunderstorm wind blew down a couple trees and some power lines in Miami.

Thunderstorm Wind, Cherokee

When: June 11, 10:30 PM CST
Where: Cherokee County, 4.82 mi WSW of Moodys
Measured: 56 kt (64 mph) estimated gust
Reported by: Public
Coordinates: 36.010, -95.033

Thunderstorm wind gusts were estimated to 65 mph.

Flash Flood, Cherokee

When: June 12, 12:22 AM CST to 3:00 AM CST
Where: Cherokee County, Tahlequah to 1.81 mi NW of Park Hill
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 35.920, -94.970

Several streets in downtown Tahlequah were flooded and closed.

Flash Flood, Cherokee

When: June 12, 1:00 AM CST to 4:30 AM CST
Where: Cherokee County, 1.84 mi NNW of Peggs to 2.03 mi N of Peggs
Cause: Heavy Rain
Reported by: Broadcast Media
Coordinates: 36.105, -95.112

A camp ground was inundated and isolated by flood waters, necessitating the swift water rescue of fifteen campers.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Oklahoma in 2026 Every state in 2026 This day in weather history Warnings in Oklahoma, June 2026

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1342424, 1342616, 1342617, 1342618, 1342620, 1353949.